Fire-alarm.



A. GUENETTE.

FIRE ALARM.

APPLICATION FILED MAY 29, 1011.

Patented July 2, 1912.

2 SHEETS-SHEET 1.

Witnesses Attorneys A. GUENBTTE.

FIRE ALARM.

APPLICATION FILED MAY 29, 1911. 1,031,336. Patented July 2, 1912.

2 SHEETS-SHEET 2.

MZAZAZ/I/ 17 Z {ZF Inventor Altomeys Canada,

' ALEXANDBE GUENETTE, OI!

LACHUTE MILLS, QUEBEC, CANADA.

FIRE-ALARM.

Specification of Letters Patent.

Application. filed Kay 29, 1911. Serial No. 628,969.

To all whom it may comm? Be it known that I, ALEX-ANDRE Gunrm'rrn, a subject of the Kin of England, resldmg at Lachute Mills, in t e Province of Quebec,

have invented certain new and useful Improvements in Fire-Alarms; and I do hereby declare that the following is a full, clear, and exact description of the nvention, such as will enable others skilled-1n. the art to which it appertains to make and use the same,

The invention to be hereinafter described relates to fire alarms and more particularly to electric fire alarms.

In order to more clearly disclose the-com struction, operation and use of the invention, reference should be had to the accompanying drawings forming part of the present application.-

Throughout the several figures of the drawings like reference characters designate the same parts.

In the drawin s: Fi ure 1 isatop plan view of the cloc wor or train actuating mechanism; Fig. 2 is a side elevation of the same; Fig. 3 is a right hand end elevation of Fig. 2; Fig. 4 is a view similar to .Fig. 2 with the near wall of the casing removed; and Fig. 5 is asection through a building, with the invention applied.

The main object of the invention is to provide a simply constructed, economical,

efficient, and accurate alarm which may be equally well applied to one, or to a number, of buildings or parts of buildings.

Referring to the drawings in detail, 1 indicates a suitable support creasing in which is mounted a weight actuated clock'train 2. The weight 3 for actuating the train is removably mounted on the-outer end of a lever arm 4. The outer-end of the arm 4 is fulcrumed on the arbor of the'master gear of the clock train and carries the spring pressed actuating pawl 5 which cofiperates with the ratchet wheel 6 fixed to the master gear. Thus, when the arm 4 is drawn downward by the weight 3, the clock train will be operated, whereas, lifting of the arm will not cause 0 eration of theclock train. Nor.- mally, the weight 3 and arm 4 are held in raised or inoperative position by means of a yoke 5 pivotally connected to the casing walls and adapted to either swing under an support the weight, as in full lines, or to be ralsed to the dotted line position to free the weight-see Fig. 2. I

'open exce To efi'ect raisin of the yoke 5 to free the weight, bell cran levers 7 are provided. These levers are fulcrumed on a rod 8 mounted in the upper part of the walls of the casing. Each lever is provided with an off set arm 9 adapted to on age the edge of yoke 5 and lift'it to free t e weight. The lever is so fulcrumed that it will swing by gravity to the dotted line. position of Fig. 2. However, to assist in this movement, an actuating weight 10 is adjustably mounted on the long arm of the'lever. This long arm, with its weight, however, is kept normally raised by means of a chain or other device 11. T1118 chain or other flexible connection is passed over suitable guide rollers and extended around the walls of a room or building near the ceiling and has its free end connected to one branch of a bell crank lever Patented Ju1y2,191 2.

12, the opposite branch of the lever being weighted to keep the chain, or the like, taut and so hold the lever 7 raised and inoperative. The chain or other'connecting means is rovided with a number of easily fusible lin s or sections distributed throughout its length. As soon as any one of these links or sections is fused by fire, the lever 7 will be released and will swing to the dotted line position of Fig. 2, thus freeing the weight 3 and causing operation of the clock train.

Splined to the arbor of the last gear of the clock train is a contact 13. T1118 contact is inclosed in a heavy or circular block of insulation 14 in such manner that only its tip is exposed beyond the surface of the block. As the arbor rotates, the contact meets the surface of the spring contact finger 15 projecting from the inner end of a inding post16 mounted in one wall of the casing just a short distance from the arbor carrying the contact 13. A second bindin post 17 1s connected to the frame or casing a jacent the end of thearbor on which contact 13 is mounted. Each of the binding posts receives one of the branch wires of an alarm circuit. This circuit is normally t when contact 13 engages contact 15. t such time the circuit 1s closed and. the alarm will be sounded. The number of times that the alarm 'is sounded is determined by the number of revolutions of the arbor carrying contact 13. This, of course, may be regulated as desired. It should be noted that a plurality of levers 7 may be used, one for each bullding, room,

. or apartment to be protected. In such case,

. compartments, will operate to release .t

part1cular lever and thus close thecircuit to f same an a fire in any as of the buildings, maste at operate the alarm. 4

It is thought that the operation and use of the invention will be clear ing detailed description.-

Changes may be made in the construction arrangement, and disposition of the several parts of the invention without in any way from the field and scope of the epartin 5 it is meant to include all such within this application wherein only a pre alarm circuit, cloc train mechanism adapted to close said circuit, a weight operated lever for actuating said clock train mechanism, a yoke adapted to support said lever in inoperative position, a bell crank lever from the precede.

ada ted to engage and lift said yoke to free sai weight operated lever, and a fusible device adapted to'hold said bell crank lever its lever supporting sition.

' 2. An apparatus '0 the character described, coniprisin a normall open electric alarm circuit, cloc train mec anism adapted to close said circuit, a weight operatedlever for actuating'said clock train,

ally mounted yoke ada ted to engage be a pivotneath and sup rt said ever inoperative position,.a be crank lever providedwith an ofi set armadapted to engage said yoke and swing it to ino erative position, and a fusible device .for olding said bell crank lever normally in its'lever supporting position.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

'ALEXANDRE GUENETTE.

Witnesses: I

JEAN YAGNEIR, J E,v VALOIS. 

